I am not an expert, but found this discussion that could probably help you. http://stackoverflow.com/questions/13372398/flash-cs6-edit-multiple-keyframes
Meanwhile, I am asking around to see if there is a better solution.
As I understand, you want to increase the first frame numbers of each graphic symbol instance as they're placed on the timeline.
There's a shortcut of doing so:
1 Select and highlight the entire frame range on timeline, where the graphic symbol is placed.
2 Right-click on a selected frame, click on Synchronize Symbols, and should automatically be done for you!
Hope this helps! Or let me know if you meant something else.
Yes it work!
Thanks so much It really helps.
Just before selecting I have to upgrade the first keyframe manually and then doing the shourtcut.